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TLS Online TPP Program

#Question id: 4640

During drought years on the Galapagos, small, easily eaten seeds become rare, leaving mostly large, hard-cased seeds that only birds with large beaks can eat. If a drought persists for several years, what should one expect to result from natural selection?

#Section 2: Evolution

  1. Small birds gaining larger beaks by exercising their mouth parts.

  2. Small birds mutating their beak genes with the result that later-generation offspring have larger beaks.

  3. Small birds anticipating the long drought and eating more to gain weight and, consequently, growing larger beaks.

  4. More small-beaked birds dying than larger-beaked birds. The offspring produced in subsequent generations have a higher percentage of birds with large beaks.

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TLS Online TPP Program

#Question id: 3374

#Section 2: Evolution

Consider an autosomal locus with two alleles A1 and A2 at frequencies of 0.6 and 0.4 respectively. Each generation, A1 mutates to A2 at a rate of μ = 1 x 10-2 while A2 mutates to A1 at a rate of υ = 1 x 10-1) Assume that the population is infinitely large and no other evolutionary force is acting. The overall change in allelic frequency will be
TLS Online TPP Program

#Question id: 3481

#Section 2: Evolution

Classical conditioning and operant conditioning differ in that

A) classical conditioning takes longer.

B) operant conditioning usually involves more intelligence.

C) operant conditioning involves consequences for the animalʹs behavior.

D) classical conditioning is restricted to mammals and birds.
TLS Online TPP Program

#Question id: 10716

#Section 1: Ecology

The stability of a food web in a community is quantified using certain parameters which are defined below. Which of the following is an CORRECT representation?

A. Community with more complex is more stable

B. Community with more number of alternate is more stable

C. Stability of community is inversely proportional to Connectance 

D. Community with higher value of dominax index is more stable
TLS Online TPP Program

#Question id: 12575

#Section 5: Applied Ecology & Evolution

All of the following are adaptations that permit the camel to be active by day in the desert EXCEPT 
TLS Online TPP Program

#Question id: 4603

#Section 2: Evolution

Of the following anatomical structures, which is homologous to the bones in the wing of a bird?